Bath scale



FIG. 1 is a top right perspective view of the bath scale showing the new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof and being the same as the left side elevational view thereof and front and rear side elevation view thereof; and,

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a bath scale, as shown and described. 